Verified answer

Is number of electrons a physical properties? Yes

Is number of protons a physical properties? Yes

Who can tell me? Me!

A physical property is any aspect of an object or substance that can be measured or percieved without changing its identity.

eg.

density

conductance

concentration

length, width , volume

mass

momentum

melting point

freezing point.

Physical properties are properties of bulk material, that can be measured. Examples are:

Phase at room temperature (eg solid)

Density at room temperature

Liquid density at melting point

Melting point

Boiling point

Heat of fusion

Heat of vaporization

Heat capacity

Also hardness, elasticity, thermal expansion - I'm sure you'll turn up more with a bit of research.

Number of electrons/protons (will be the same of course) is an Atomic property. There are also Electrical properties.